3D Skybox Help (NEW TO HAMMER)

Hello everyone. I'm pretty new to Hammer and been making little maps and stuff like that. But I've heard of 3d skyboxes, watched a few vids on em, and still have no idea what it is or how to set it up. Anyone got any ideas?

Here's the rundown, a 3d skybox uses an entity "sky_camera", the sky_camera is positioned outside of the map in a miniature scene (also surrounded by a skybox). It then "transmits" what it sees to the playspace's skybox. (And what it transmits is relative to map origin, so you have to align it so it works. More info here.)

Every hour, on the hour.-----------------------------The search for knowledge, in my case, is never over. When curiosity presents itself, I search...and actually use Google instead of asking people.​